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Is Sunday 10 January 2027 a CHAPS business day?

No.

CHAPS does not settle at weekends.

Weekend
Next business day
Mon 11 Jan 2027
Previous business day
Fri 8 Jan 2027

Decided by the weekend rule: saturday and sunday are closed on CHAPS.

release 2026.10.29.1

How we know

Around this date

  1. Sun 3, Sunday 3 January 2027: weekend
  2. Mon 4, Monday 4 January 2027: open
  3. Tue 5, Tuesday 5 January 2027: open
  4. Wed 6, Wednesday 6 January 2027: open
  5. Thu 7, Thursday 7 January 2027: open
  6. Fri 8, Friday 8 January 2027: open
  7. Sat 9, Saturday 9 January 2027: weekend
  8. Sun 10, Sunday 10 January 2027: weekend
  9. Mon 11, Monday 11 January 2027: open
  10. Tue 12, Tuesday 12 January 2027: open
  11. Wed 13, Wednesday 13 January 2027: open
  12. Thu 14, Thursday 14 January 2027: open
  13. Fri 15, Friday 15 January 2027: open
  14. Sat 16, Saturday 16 January 2027: weekend
  15. Sun 17, Sunday 17 January 2027: weekend
  16. Mon 18, Monday 18 January 2027: open
  17. Tue 19, Tuesday 19 January 2027: open
  18. Wed 20, Wednesday 20 January 2027: open
  19. Thu 21, Thursday 21 January 2027: open
  20. Fri 22, Friday 22 January 2027: open
  21. Sat 23, Saturday 23 January 2027: weekend
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Sun 10 Jan on other calendars

CalendarStatusWhy
Germany: nationwide public holidays DEWeekendWeekend
T2 (TARGET RTGS) EU-T2WeekendWeekend
England and Wales bank holidays GB-EAWWeekendWeekend
FedACH Services US-FEDACHWeekendWeekend
US federal holidays US-FEDERALWeekendWeekend
FedNow Service US-FEDNOWOpenBusiness day
Fedwire Funds Service US-FEDWIREWeekendWeekend

Get this answer in code

curl -H "Authorization: Bearer $ZEITWIDE_API_KEY" \
  https://api.zeitwide.com/v1/calendars/GB-CHAPS/days/2027-01-10

{
  "date": "2027-01-10",
  "is_business_day": false,
  "dataset_release": "2026.10.29.1"
}

Agents get the same answer from the is_business_day MCP tool. Developer quickstart

Questions people ask

Is Sunday 10 January 2027 a CHAPS business day?
No. Sunday 10 January 2027 is a weekend day, and CHAPS does not settle at weekends. Next business day: Mon 11 Jan 2027. Previous: Fri 8 Jan 2027. Backed by official sources.
When does CHAPS settle again?
Monday 11 January 2027.
Can I be warned about changes like this?
Yes. Sign in and add CHAPS to an alert rule for webhook alerts.